2021 Annual Meeting Shoulder Access Pass-Failure of Posterior Capsulolabral Repair is Correlated with Percent of Glenoid Bone Loss

Failure of Posterior Capsulolabral Repair is Correlated with Percent of Glenoid Bone Loss

Video Transcription

Video Summary

This study examined posterior shoulder instability, emphasizing its distinct pathology from anterior instability, particularly the role of cumulative microtrauma and glenoid bone morphology. Using advanced MRI techniques corrected for imaging axis, researchers analyzed 75 patients who underwent arthroscopic posterior capsular labral repair. Findings showed that decreased glenoid bone width and increased percent bone loss significantly raised surgical failure risk. Specifically, surpassing 11% bone loss increased failure risk tenfold, and 15% bone loss increased it 25-fold. The study highlights the importance of precise imaging and quantifying posterior glenoid bone loss to predict outcomes, underscoring that posterior instability differs fundamentally from anterior forms.

Asset Caption

Dr. Justin Arner

Keywords

posterior shoulder instability

glenoid bone morphology

microtrauma

arthroscopic posterior capsular labral repair

bone loss and surgical failure risk